快速响应小卫星星座设计及覆盖性能仿真分析  

Design of Operationally Responsive Small Satellite Constellation and Simulation Analysis of Coverage Ability

作　　者：曾德林[1] 

机构地区：[1]国防科技大学航天科学与工程学院,湖南长沙410073

出　　处：《计算机仿真》2014年第6期73-77,119,共6页Computer Simulation

基　　金：大学生创新实验计划(201290002005)

摘　　要：传统的卫星星座设计以全球覆盖为目的,由于轨道较高、针对性小且无法满足热点地区的信息需求,提出了一种适用范围广且可以满足快速响应需求的小卫星星座设计方法,建立了快速响应小卫星星座设计数学模型。首先采用解析几何分析的方法,研究了星下点轨迹与覆盖圆的位置关系对特定目标区域覆盖和响应性能的影响,设计出了满足特定需求的轨道;然后基于设计出的轨道提出了快速响应小卫星星座设计方案;最后以雅安地区为目标点运用MATLAB和STK相结合进行数值仿真,仿真结果与数学模型得出的结果一致,提出的星座方案对于雅安地区能够实现每隔1150s覆盖126s,验证了模型的正确性。Conventional constellations, in high orbit, are usually designed for the global coverage, and cannot obtain the information of important area when they are in emergency conditions. To solve the problem, a design method of operationally responsive small satellite constellation was proposed, which can satisfy the wide range of needs. A corresponding mathematical model was built in the paper. Firstly, the geometry analytic methods were applied to study the influence of the location relationships of track of subsatellite point and the coverage circle on coverage and responsive ability of specific target area, and the orbit which can satisfy the needs was designed. Then, based on the orbit, a small satellite constellation design scheme was proposed. Finally, taking the city YA＇an as the target area, simulations with STK software and Matlab software were carried out to demonstrate that the simulation result is the same as that of mathematical model, the constellation scheme can bring about 126s coverage for every 1150s. And it verified the correctness of the model.

关 键 词：快速响应 小卫星星座设计 区域覆盖性能 最佳覆盖网格 

分 类 号：V417.6[航空宇航科学与技术—航空宇航推进理论与工程]